10. Quarterly Results of Operations (Unaudited)

Following is the quarterly results of operations of the Company for the years ended December 31, 2017 and 2016. The unaudited quarterly results have been prepared on substantially the same basis as the audited Consolidated Financial Statements.

	Quarter Ended
	Mar 31, 2016		Jun 30, 2016		Sep 30, 2016		Dec 31, 2016		Mar 31, 2017			Jun 30, 2017			Sep 30, 2017			Dec 31, 2017
	(In thousands, except per share data)
Statements of Income Data:
Revenue:
Software license	$	19,617	$	18,882	$	20,012	$	20,702	$	21,277		$	20,064		$	16,260		$	14,712
Cloud subscriptions		990		1,749		1,621		1,423		1,496			2,378			2,534			3,188
Maintenance		31,757		32,841		34,424		34,826		33,376			35,959			36,338			37,325
Services		88,735		91,866		89,613		81,571		79,781			85,327			84,211			77,183
Hardware		8,761		9,554		6,543		9,070		7,559			10,413			13,540			11,678
Total revenue		149,860		154,892		152,213		147,592		143,489			154,141			152,883			144,086
Costs and expenses:
Cost of license		2,322		1,361		1,706		1,429		1,352			1,438			1,316			1,377
Cost of cloud subscriptions, maintenance and services		56,862		54,053		55,346		53,374		54,899			53,109			51,103			48,934
Cost of hardware		5,629		7,103		4,626		6,068		5,370			7,766			10,653			8,416
Research and development		14,706		13,458		13,389		13,183		14,225			14,102			14,747			14,630
Sales and marketing		12,588		12,015		10,003		13,617		11,789			11,732			10,739			13,222
General and administrative		12,448		12,368		11,225		12,281		11,872			11,387			11,031			11,764
Depreciation and amortization		2,206		2,266		2,334		2,284		2,262			2,326			2,275			2,197
Restructuring charge		-		-		-		-		-			3,022			(77	)		(24	)
Total costs and expenses		106,761		102,624		98,629		102,236		101,769			104,882			101,787			100,516
Operating income		43,099		52,268		53,584		45,356		41,720			49,259			51,096			43,570
Other income (loss), net		520		654		210		416		(371	)		(68	)		207			(580	)
Income before income taxes		43,619		52,922		53,794		45,772		41,349			49,191			51,303			42,990
Income tax provision		16,139		19,581		20,298		15,855		13,125			18,047			18,704			18,476
Net income	$	27,480	$	33,341	$	33,496	$	29,917	$	28,224		$	31,144		$	32,599		$	24,514
Basic earnings per share	$	0.38	$	0.46	$	0.47	$	0.42	$	0.40		$	0.45		$	0.47		$	0.36
Diluted earnings per share	$	0.38	$	0.46	$	0.47	$	0.42	$	0.40		$	0.45		$	0.47		$	0.36
Shares used in computing basic earnings per share		72,630		71,880		71,403		70,742		69,973			69,227			68,928			68,485
Shares used in computing diluted earnings per share		73,020		72,228		71,743		71,148		70,247			69,421			69,135			68,791